532 Vehicle Ultrasonic Mouse Repeller(Black)

532 Vehicle Ultrasonic Mouse Repeller(Black)1. The product uses 12V conventional car battery power supply, no need to use another power supply, easy to install and use 2. Reverse connection protection function; to prevent artificial reverse circuit connection and damage to the product 3. Product power on self test function; when the product is installed for the first time and the switch is turned on, the product enters the automatic detection function to detect the function of each component;